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qemu-kvm/SOURCES/kvm-virtiofsd-Remove-fuse_req_getgroups.patch

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From 7a1860c83ff042f3e796c449e780ee0528107213 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Tue, 3 Mar 2020 18:43:08 +0000
Subject: [PATCH 12/18] virtiofsd: Remove fuse_req_getgroups
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20200303184314.155564-2-dgilbert@redhat.com>
Patchwork-id: 94122
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 1/7] virtiofsd: Remove fuse_req_getgroups
Bugzilla: 1797064
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Ján Tomko <jtomko@redhat.com>
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Remove fuse_req_getgroups that's unused in virtiofsd; it came in
from libfuse but we don't actually use it. It was called from
fuse_getgroups which we previously removed (but had left it's header
in).
Coverity had complained about null termination in it, but removing
it is the easiest answer.
Fixes: Coverity CID: 1413117 (String not null terminated)
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 988717b46b6424907618cb845ace9d69062703af)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tools/virtiofsd/fuse.h | 20 -----------
tools/virtiofsd/fuse_lowlevel.c | 77 -----------------------------------------
tools/virtiofsd/fuse_lowlevel.h | 21 -----------
3 files changed, 118 deletions(-)
diff --git a/tools/virtiofsd/fuse.h b/tools/virtiofsd/fuse.h
index 7a4c713..aba13fe 100644
--- a/tools/virtiofsd/fuse.h
+++ b/tools/virtiofsd/fuse.h
@@ -1007,26 +1007,6 @@ void fuse_exit(struct fuse *f);
struct fuse_context *fuse_get_context(void);
/**
- * Get the current supplementary group IDs for the current request
- *
- * Similar to the getgroups(2) system call, except the return value is
- * always the total number of group IDs, even if it is larger than the
- * specified size.
- *
- * The current fuse kernel module in linux (as of 2.6.30) doesn't pass
- * the group list to userspace, hence this function needs to parse
- * "/proc/$TID/task/$TID/status" to get the group IDs.
- *
- * This feature may not be supported on all operating systems. In
- * such a case this function will return -ENOSYS.
- *
- * @param size size of given array
- * @param list array of group IDs to be filled in
- * @return the total number of supplementary group IDs or -errno on failure
- */
-int fuse_getgroups(int size, gid_t list[]);
-
-/**
* Check if the current request has already been interrupted
*
* @return 1 if the request has been interrupted, 0 otherwise
diff --git a/tools/virtiofsd/fuse_lowlevel.c b/tools/virtiofsd/fuse_lowlevel.c
index de2e2e0..01c418a 100644
--- a/tools/virtiofsd/fuse_lowlevel.c
+++ b/tools/virtiofsd/fuse_lowlevel.c
@@ -2667,83 +2667,6 @@ int fuse_lowlevel_is_virtio(struct fuse_session *se)
return !!se->virtio_dev;
}
-#ifdef linux
-int fuse_req_getgroups(fuse_req_t req, int size, gid_t list[])
-{
- char *buf;
- size_t bufsize = 1024;
- char path[128];
- int ret;
- int fd;
- unsigned long pid = req->ctx.pid;
- char *s;
-
- sprintf(path, "/proc/%lu/task/%lu/status", pid, pid);
-
-retry:
- buf = malloc(bufsize);
- if (buf == NULL) {
- return -ENOMEM;
- }
-
- ret = -EIO;
- fd = open(path, O_RDONLY);
- if (fd == -1) {
- goto out_free;
- }
-
- ret = read(fd, buf, bufsize);
- close(fd);
- if (ret < 0) {
- ret = -EIO;
- goto out_free;
- }
-
- if ((size_t)ret == bufsize) {
- free(buf);
- bufsize *= 4;
- goto retry;
- }
-
- ret = -EIO;
- s = strstr(buf, "\nGroups:");
- if (s == NULL) {
- goto out_free;
- }
-
- s += 8;
- ret = 0;
- while (1) {
- char *end;
- unsigned long val = strtoul(s, &end, 0);
- if (end == s) {
- break;
- }
-
- s = end;
- if (ret < size) {
- list[ret] = val;
- }
- ret++;
- }
-
-out_free:
- free(buf);
- return ret;
-}
-#else /* linux */
-/*
- * This is currently not implemented on other than Linux...
- */
-int fuse_req_getgroups(fuse_req_t req, int size, gid_t list[])
-{
- (void)req;
- (void)size;
- (void)list;
- return -ENOSYS;
-}
-#endif
-
void fuse_session_exit(struct fuse_session *se)
{
se->exited = 1;
diff --git a/tools/virtiofsd/fuse_lowlevel.h b/tools/virtiofsd/fuse_lowlevel.h
index 138041e..8f6d705 100644
--- a/tools/virtiofsd/fuse_lowlevel.h
+++ b/tools/virtiofsd/fuse_lowlevel.h
@@ -1705,27 +1705,6 @@ void *fuse_req_userdata(fuse_req_t req);
const struct fuse_ctx *fuse_req_ctx(fuse_req_t req);
/**
- * Get the current supplementary group IDs for the specified request
- *
- * Similar to the getgroups(2) system call, except the return value is
- * always the total number of group IDs, even if it is larger than the
- * specified size.
- *
- * The current fuse kernel module in linux (as of 2.6.30) doesn't pass
- * the group list to userspace, hence this function needs to parse
- * "/proc/$TID/task/$TID/status" to get the group IDs.
- *
- * This feature may not be supported on all operating systems. In
- * such a case this function will return -ENOSYS.
- *
- * @param req request handle
- * @param size size of given array
- * @param list array of group IDs to be filled in
- * @return the total number of supplementary group IDs or -errno on failure
- */
-int fuse_req_getgroups(fuse_req_t req, int size, gid_t list[]);
-
-/**
* Callback function for an interrupt
*
* @param req interrupted request
--
1.8.3.1
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